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Article

Synthesis of Si/Fe2O3-Anchored rGO Frameworks as High-Performance Anodes for Li-Ion Batteries

by 1,2,†, 1,†, 1,*, 1, 1 and 1,2,3,*
1
School of Materials Science and Engineering, Hebei University of Technology, Tianjin 300401, China
2
Key Laboratory for New Type of Functional Materials in Hebei Province, Hebei University of Technology, Tianjin 300401, China
3
Research Institute of Foundry, Hebei University of Technology, Tianjin 300401, China
*
Authors to whom correspondence should be addressed.
These authors contributed equally to this work.
Academic Editors: Carlos Miguel Costa and Senentxu Lanceros-Mendez
Int. J. Mol. Sci. 2021, 22(20), 11041; https://doi.org/10.3390/ijms222011041
Received: 31 August 2021 / Revised: 7 October 2021 / Accepted: 11 October 2021 / Published: 13 October 2021
(This article belongs to the Special Issue Advanced Battery Research for Energy Storage Systems)
By virtue of the high theoretical capacity of Si, Si-related materials have been developed as promising anode candidates for high-energy-density batteries. During repeated charge/discharge cycling, however, severe volumetric variation induces the pulverization and peeling of active components, causing rapid capacity decay and even development stagnation in high-capacity batteries. In this study, the Si/Fe2O3-anchored rGO framework was prepared by introducing ball milling into a melt spinning and dealloying process. As the Li-ion battery (LIB) anode, it presents a high reversible capacity of 1744.5 mAh g−1 at 200 mA g−1 after 200 cycles and 889.4 mAh g−1 at 5 A g−1 after 500 cycles. The outstanding electrochemical performance is due to the three-dimensional cross-linked porous framework with a high specific surface area, which is helpful to the transmission of ions and electrons. Moreover, with the cooperation of rGO, the volume expansion of Si is effectively alleviated, thus improving cycling stability. The work provides insights for the design and preparation of Si-based materials for high-performance LIB applications. View Full-Text
Keywords: dealloying; Si; Li-ion battery; anode; nanoporous dealloying; Si; Li-ion battery; anode; nanoporous
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MDPI and ACS Style

Yan, Y.; Chen, Y.; Li, Y.; Wu, X.; Jin, C.; Wang, Z. Synthesis of Si/Fe2O3-Anchored rGO Frameworks as High-Performance Anodes for Li-Ion Batteries. Int. J. Mol. Sci. 2021, 22, 11041. https://doi.org/10.3390/ijms222011041

AMA Style

Yan Y, Chen Y, Li Y, Wu X, Jin C, Wang Z. Synthesis of Si/Fe2O3-Anchored rGO Frameworks as High-Performance Anodes for Li-Ion Batteries. International Journal of Molecular Sciences. 2021; 22(20):11041. https://doi.org/10.3390/ijms222011041

Chicago/Turabian Style

Yan, Yajing, Yanxu Chen, Yongyan Li, Xiaoyu Wu, Chao Jin, and Zhifeng Wang. 2021. "Synthesis of Si/Fe2O3-Anchored rGO Frameworks as High-Performance Anodes for Li-Ion Batteries" International Journal of Molecular Sciences 22, no. 20: 11041. https://doi.org/10.3390/ijms222011041

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